Power gear-shifting mechanism.



Patented Apr. 3, 1917.

y8 SHEETS-SHEET I" QN 4 n.0. v bQ/Nw. f .INIHI c. G. mmm. I `POWER GEAR SHINING MECHANIIIM. APPLICATION FILED HAY l5. ISI'I. II'IIEUED Ulf 21| IMI. `1,221,31 9.

1N VEN TOR.

" ATTORNEY.

c. G. HANNA.M Powfn GEAR summa nEc 4MILICATIGN FILED IAvY I5, 1,221,319.

HANISH.`

I9H- REVIEWED IUHE 2?1916 Patented Apr.

(l fr n .an

c. G. HANNA. l Powf'n GEAR summa MECHANISM Arrucm 1,221,319.

0N FILED IVAY l5. |914. REVIEWED JUNIZI. ISI.

Patented Apr. 3, "191,71

8 SHEETS-SHEET 4.

C. G. HANNA. POWER GEAR Slill'fTlNG` MECHANISM. APPLICAVIOII FILED IAV l5. IDH-IENWEU )UNE 2. )916. 1,221,319.

Patented Apr. 3, 1917. 1

,m. L Y ff. f 1 l@ S im .f

C. G. HANNA. POWERV GEAR SHIFING MECHANISM. Arrucmou min MAY l5. 1914. nzntwzb 1um.'21. 191e.

1,22 1,3 1 `9. Patented Apr. 3, 1917.

a study-SHEET a.

C. G. HANNA.'

l Powf GEAR summa MEcHAmsM. fAIPLICATIQN FILED HAY-I5. |914. RENEWED JUNE 27.191-6. 1,221,319, Patented Apr. 3, 1.917.

a SHEETS-SHEET a .f4/ ffy N fa@ 45 Fig. 5.

Uiisi'ifriii)I srnriis CHARLES G. HARINA, 0F BYBACUBE, NEW YORK, ASSIGN OR. 0F UNE-HALF T0 v SLOCUM, 0F SYBACUSE, NEW YORK. i

POWER GEABPSIHIFTINGy MECH ANISM.

Application inea my is, i914, serial No. 833,791'.

1b all 'whom it concern.;

' Bc it known that I, CHARLES G. HANNA,

a citizen of the United States, and a resident of'Syreouse, in the count) of Onondaga and StatekofrNewYorkfhave invented a certain `new `und useful Power Gear-Shifting Mech.- "anisin, of which the following is a specification. Y y

This invention relates to .change speed transmission gearing for motor vehicles, and has for its object meanswhereby' different speed changes, eiected'by" shifting elements, as clutches or geiiijs ..&.0Iplishedf.by poii'ei-tafkcn" from th necand controlled by manual means'and .the invention consists jin the novel combinations and lconstructions hereinafter set` forth Bild clail'ned.v u

`ln describing thisiiivention, reference is ,had to the accompanyingv drawings. in which laparts in `all E.gearing providedwit f-In'y" invention, cointigllusf-portions of the motor shaft and "andssthe gearing being; also 'like l i characters -d'ignte corresponding the vfiew'lssT i yFiiguie `1 is a Plan2' ai'tlylin section,y of a Wheel, l andclutcli' connecting. the lsaine .'s'hown.

V"Iligg 2i`s an elevation'ofparts. seen in iiiii 'clutch being Fi isa detail Yi v in plan 1'0dS.With l.which the selecting Iand shiftingwinel'inrbercoact, and

n contiguous parts.

"fs's Fig. 4. is a side elevation of one of the shipper rods, the selecting; and shifting member being shown as coacting therewith.

Fig. 4 isa plan view showingV the'slot therein. l Fig.'5 is a :face View of the cam forming .part ofthe powerl transmitting mechanism i which 'effects the gear shiftsand controls the operation of the main'clutch during the gear shifts, the parts of said mechanism coacting' with the cam being also shown. Fig.

Fig. Tis a sectional View taken the 4plane of line 7.7,"Fig. 2, showing the clutch Specifica-tion of Letters Patent.

ofgthe cover plate driveii, gear-shifting `6 is a plan'view lof-partsl` seen in 4carinii* oFFioE.

Patented Apr. 3, 1917. Renewed .une 27, 191e. serial No. 166,262.

'means for operating the clutch oivgvconnecl,ing.|` means. x

. Fig 8. is a sectional view on line ffl-54. Fig.

`11`ig. 9 is -i detail view means or cl -itch section.'

Fig. 10 iowa developed View of the 'pe ripliery of the clutch section.

Fig. 11Y is n detail 'view through the shift`V ing member and contiguous parts, taken on the plane of line ll-llg Fig. l.

y Fig; 121s a. detailvof the cam for shifting-the reversing member. -Fig..12v being taken on plane of line 12-12, Fig. 11.

Fig. 13 is a sectional View,A parts being omitted, on i'ne' 13e-13, Fig. 6.

Fig. 14 is an edge view Vof one ofthe levers shown in Fig. 13 1ooking to the left.

Fig. 15 is a side elevation Vthe levers sh )wn in VFig. 13.'

'FigV 16 is "a plan viewV of the manually ot the connecting of another of operated controllinglever. and controlling in section. 'e

Fig. 17 is a section on-tli'e'plane of4 line .1,7-17, Fig. 16, the lever being shown as shifted into its `central position.

Figs. 18 and 19-ar respectively, a crosssection andfau elevalon through the 'steen ing wheel post showi g the' means for transmitting the riotioii 'of -tlie manually operated 'controlling element to the parts asso- .inted with the gearing. I

'' Fi; 20'is a detail view ofthel connections between` the 1f nk shown 4in Fig. 19 andthe `rock shaft associated with the transmission gearing'for oc ntrolling the gear shifts.;

Fig. .21,is a detail view of the power transmitting connections between the ower mechanism an main 'clutch operating. 'mechanism'.

the

1This change speed gearingincludes, igen-'v erally, Va shift ing member,V a power shaft.

' power transmitting connections between the power sliaftand the' shifting member including sliiftable 'connecting means as a 'shiftable element or clutch normally out of eli'ective connection with the power shaft, manually operated means for controlling the shifting of said connecting means or clutch into and out of effective connection with the operation.

power shaft, and means operated by the manual means for automatically shifting the connecting means or clutch out of operative position whenthe operation of the shiftingr member has been accomplished..

he invention further preferably includes means whereby the gear shifting operation can take place only when the main clutch is disengaged so that the transmission gearing is not being driven by the engine sha t when the changes or shifts are made.

The common type of transmission gearing now used in motor vehicles is what is known as thel selective type, and I have shown my invention as embodied in this type of gearing, and the manually operated controlling means also effects the selecting movement of the shifting member. This shifting member, in selective type of gearing, usually consists of an axially miovable rock shaft having a finger or arm prolecting therefrom which coacts with notches in shifters which are usually called shipper rods, theV axial movement of the shifting member moving the finger out of the notch of one shipper rod and into the notch of another, thus selecting a particular shipper rod, and the, rocking movement 'of said member in one direction or the other from neutral position effects the gear shifting As will understood by those skilled in the art, the shipper rods are connected by means of forks or otherwise to.

shiftable gears.

. The construction of gearing per se forms no part of this invention, and I have illustrated only enough of the internal mechanism of the gearing to make my invention clear to those skilled in the art. In so far as this invention is concerned it is immaterial whether ears or clutches are shifted or whether t e shiftin member operatesother speed controlling eements. The term selective or 'selective power transmissionv gearing is used generically throughout in the interest of brevity and is used in the sense that some part to be shifted is selected 'before being shifted rather than in a narrower sense such as the term might be said to have acquired to denote what is now known to vthe automobile trade as a specific form of selective gearing. 5

In the form ofm'y invention here illustrate'd, means operated -by the engine is providedwhereby'the main clutch is shifted out of operative position preliminary to' the gear shifting operation and intooperation after 'the shiftin is.' completed, and

said means isv control ed by the manually cerated mechanism. governing the gear sift.'- lreferably, said meansis actuated the. power transmitting mechanism which effects the. gear. shifts, vor the' power .transmitting mechanism includes two branches, oneoperating the gear shifting driven shaft.

member and the other, the main clutch opeiatin trolle by the shiftable connecting or clutch means which is common to both branches.

1 is the'driving or motor shaft, 2 the 3 designates the main or disk clutch connecting the shafts 1, 2, the clutch bein shown as built into the dy wheel 4 of t e engine.

5 is a rock shaft having a yoke 6 provided with trunnions 7 acting on a collarv 8 which is carried by a sleeve 9 slidable on the shaft 2, the sleeve 9 havin a head which carries onef of the s ets of dis s of the disk clutch 3, and the shaft 5 being operated by the usual pedal 10 to separate the disks of.

means, bothbranches being con- 13 are the Shifters or shipper rods having 1 intermediate and' reverse speeds are made;

through shiftable gears. The shifting of the clutch and gears is brought about by'.A

movements of the shipper rods 13.

The construction so far described is standard and foruis in itself no part of this invention.

1G is the shifting member which has a selecting and shifting finger 1-7, Fig. 4, said member 16 being shiftable axially to carry the 'lower end ofthe finger into the notch" 14 of any oneof the shipper Vrods 13 andha'ving a rocking movement in one direction or the other toA shift the 'shipper rod selected.

In the ordinary construction of gearing,

this member 16 is an axially shiftable rock' shaft which is shifted axially, and rocked manually. member'is a sleeve mounted'on a supporting shaft 18, Fig. 1i, occupying the same position as the rock shaft ofthe old shifting member, the sleeve being slidable aixially by a manually controlled lever andmovable about its axis by power means driven from theengine, to be presently described. The

'shaft 18 is hollow for a purpose t9 bede- .scribed` flhe member 16 is -rocked to effect-the shifting movement by. normally dle'power In this gearing, the. shifting '1,221,319 y i a transmitting mechanism which T: includes `a shifteble connecting means or 'en element here Shown as a clutch section shi'ftable into and out 'of efl'ectiye connection with the power shaft of the engine and being normally out of effective connection therewith and shifted by manual means into effective connection. rlhis power transmitting mechanism receives its power from the engine shaft through a constantly rotatin power shaft 19 extending along the cutsi e of the gear casing r12 4and being here shown as connected to the. shaft' l by al belt or silent chain 2O running over vwheels 21., 22 on 4 the shaft -19'and on thev disk clutch casing, which isf/formed integral with the Hy wheel 4. l p

`As the shifting member 16 or finger, ig. ll). is normally arranged in a neutral posi-` tion. and. is movable about its axis in 0pposite directions from its neutral position-` to effect gear shifts, the power transmitting mechanism includes a motion reversing member w'liich is' controlled by the manual means effecting the Selecting ol' axial-move.- menlt of the member 16. More Kspecifically, the pbwer transmitting mechnism comprisesia 4shaft23, Figs. 2, 'T and 8, extending crosswise of the shaft 19.and connected thereto, as will be presently..described, a cam 24e, Figs. 5, 6 and 7,'mounted on the inner end of said shaft, a lever :25coactng y with the cam, the motion reversing member Q6 between the lever 25 and the member 16, and a "clutch element, normally zoutV of operative position` and shiftable` to connect'the cam shaft 23 to the shaft 19. The reversing 'member 26 is *an endwisely movable link Ywhich is shifted into and out of' connection with the member 16 on. opposite sides of the axis thereof, audis here shown as having notches or open ended slots 27,' 28 on its upper andlou'e'r sides enacting with pins 29, il() at the ends of arms 31.. extending in opposite .lirectir'ins from the shaft 18, Fig. 1l,- whicli shaft 1.8 is coupled to the member lil as bjf a sliding key connection 33 to rock the member i6 in any axial position thereof. The reversing member 26 is shifted manuali.;T to engage either one or vthe other Yof the arms 31, 32,` as will be hereinafter described.

The lever is connected to the link 2G gearing is delayed ou'ing. to the fact that the ends of the gear. teeth abut or clash, and

as here shown, the reversing member or link 26 is pivoted at its rear end at 34, Figs,V l.

2, 5' and 6, to a'lever looselv mounted manually operated sp1-in' mand this s ring will fyield 4and -store I up' e motionl o the level-25 in easeftlie ret/ersing member V26 is held from; movement by the fact that the teeth of the gexs clash. The lever 25 constitutesfa driving m member or partv positively.' connectedfto the cam 24 and the lever 35 isa driven :memberl or part positively conneetedto the shifting member 16.

The leven 25 is provided'with a Wiper 38 .75 at its end which lmovesin a cam groove 39, Fig. 5, in the cam disk 24. The'4 first half revolution `of the cam shifts the selected gear into mesh with its companion gear, and the second half revolution shifts the sa gear back `to neutral position, The .cam shaft 23 is joumaled in bearings in a. suitable casing 40 supported by lthe casing 1:2 of the gearing, and the motion of the power shaft 19 is transmittedV thereto Ithrough a 35 Worin l1 on theshaft 1941116.11 Worm gear 42 loosely mounted on theV shaft 234 Within the casing l0 and normally ineffective shiftable connecting means, previously referredto. Said connecting means or.` clutch `sec- 9g tion in this `embodiment of myinvention comprises a javrclutch section 43 sliiftable into and out of engagement with a clutch face 44 on the Worm gear. The clutch section 13 is slidaole on the shaft 23 into and 95 out of engagement with the clutch face 44,

' and is pressed intoo erative position by a spring 45 interoose y -vltvifeen the same and the opposing Wall o'f hecasing-tlrandis controlled in its shi g? movement by' the. 100

W ns'to described. .As seen in Fig, 14e] the lever 35is bifurjcated and is plovidedf'with'front and rear brackets 35, 35k, Fig. I3, carrying set screws 35 and 35d, and the Aspring 37 is a loop of 105 Hat spring metil vand-one end extends between the bifurzationsand between a short arm 25* of the lover 25 and the front bracket 35a and its set screw 35s. The portion of the spring between the lever 35 and the loop 110 or curve of the spring, bears against theset screw 35d carried by the rear bracket. The sta rting position or angular relation of the lever relativenT to the shaft 36 is adjusted b v the set sci-eu so that the slots 27. 28 115` of the reversing: member 2lwillcoact at )proper time with the pinsQf), 30; and the tension of the s'iring 37 is adjusted liv the through a spring connection which'v acts '.Set screw 35?. The lever 35 is also formed when the linteriim-shing of thcgears of the With a laterally extending lug or shoulder for a purpose to be prescntlg7 described.

As. here shou n. .in Figs. 9 vand 10, the clutch sectiong is formed with a cam in the form of a groove 46 having an inclined portion 47 and a blank portion `48 spaced'125 :lp-ail. and a duell portion-49 4between the ram and blank, he inclined portion 47 and blanlc48 being.ocated diametrically opposite each other so that theA dwell 49 extendsV about half way around the clutch section 130 The'cam groove is also formed with a dwell 49 extending from the blank 48 and terminatin near the cam 47. Hence, the groove y exten s nearly .around the clutch section.

50 and 51 are pins spaced apart to enter the inclinedV portions 47 and blank 48 of this groove, one pin being normally in the cam portion 47 while thother is opposite the blank portion 48 `but is withdrawnl out of same, land means is provided `for alter-v nately operating said plnsto move one pin out ofthe cam portion 47 and the-"other into the blank portion 48. Upon the withdrawal of one pin out of thevportion 47 'and the shifting of the other pin into the blankv portion,fthe spring is free-to shift the clutch section 43 into engagement with the clutch section 44 'so that the shaft 23' is rotated, thus actuating the cam 24 and rocking the shi-fting member 16,' and during the rotation of -the clutch section 43, the pin 50 or 51, which has been shifted into' the blank portion48, passes into the dwell portion 49 and then into the cam portion 47 withdrawing the clutch section 44 out of engagement with the clutch 44 after the-clutch section has made one-half revolution, and this pin remains inthe cam portion 47 and holds the clutch section 44 in inoperative position until the next operation. The dwell 49'* permits the cam to make a complete revolution in certain instances .When the manual means is operated twice in succession, without shifting the member 16' axially, as 4whenthe change is made bypsjh-ifting'the sameshipper rod from one side'o neutral to theother. This c am and pi are means for forcing the clutch 43 out 'of perative position. 'gie shifting ment or finger 16 is restr ned from 'axial selecting movement from one shipper rod tianother, .until the shipper.

rod enga ged w'ith'fsaid member 16 is returned toneutral position, and as here shown it is restrained by a pin 16 on the member 16, work-ing in s'lots 16" in a'cover plate 12, Fig. 4*, of `the casin ,-and a cross over slot 16c connecting theal 'ts 16". When a shift is made, the pin 1,65 passes in one of the slots 16" from' the slot'i 16?"and when another speed is desired the member 16` cannot beshifted axially until themember has been rockedto carry the pin 16.l into the cross over slot.4

Thepins 50 and 51 are operated by. a disk 52, Fig. 2, loosely mounted on the shaft 23 and having cams 53, 54 on diametrically opposite sides thereof, these cams coacting with the heads of the pins 50 and 51 and being so shaped as to effect the alternate 'thereto -to rock the same, the lever 55 having' \a wiper 56 .coacting with the cam groove 57 `member 16 and ammo in the cam disk 24. The rock shaft 36 is connected to the shaft 5 on which the foot pedal is mounted by means of the link 58, Fig. 1, pivoted at its front en at 59 to a rock arm 60 fixed on the slaft 5 and 00nnected at itsrear end to the rock arm 36 by a pin-and-slot connection --61 which permits the yoke to be operated by the foot pedal 10.

The shaft 36 is journaled in brackets 120 supported by the casing 12 and is primarily to transmit the motion of the cam 57 and support the arm 55, but it also constitutes a convenient means .for mounting the levers I25 and 35. The cam grooves 57 and 39 are ythe link 26 and to hold the disk clutch disengaged until the gear shifting operation is completed by the link 26.

But in order to delay the 'engaging-of the main or disk clutch 3 under abnormal'conditions, as when the gears abut or clash, means is provided whereby the rocking of the lever shaft 36, which is positively connected to the clutch operating means, is de layed by the lever 35, and a lost motion connection is provided between the lever 35 and the shaft 36, in order that the rocking motion of the lever 55 will not be transmitted to the rock shaft when the rock shaft is der. layed. Said means comprises a pair of outwardly extending shoulders 36, 36" Fig. 13

der is arranged `in advance of the .shoulder 36 to restrain rocking of the shaft for-4 wa rdly to permit the clutch to engage, and a shoulder 55, Figs. 13 and 15, on the lever 55, which shoulder 55* is arranged in advance of the shoulder 36", so that it can move away from the same, when the rock shaft 36 is restrained by the shoulder 35. As soon as the gears come in intermeshing relation and the arm 35 is actuated by the spring 37, the rock shaft 36 is rocked ahead by the spring of the main clutch, and takes up the lost motion between the shoulder 36" and 55". there is no rotating motion between the gears of the gearing, so that when th ears clash they wlll remain in abutting re tion and rarily to another speed. For instance, if the -gears clash when 'shifting in first or high los ' will not mesh, it is necessary to shift tempoor tov any Vother speed wherecthe gears'do not clash. The lever 55 constitutes a part positively vconnected to the cam 24, an the s aft 36, a driven 'part positively connected to the main clutch'operating means.

The manually operatedmeans for eifecting the selecting movement of the shifting or rocking movement-of ,said member by or controlling the actuation j ower shaft, preferably consists of a, single fever, and connections between the lever `and the shiftable connecting means and between seid ylever 'and the selecting,y :indshifting member'l, the connections to the 'shiftable connecting or clutchn'ieans in this form of my invention, operate to shift the cem 52 and serve to4 shift -the reversing member .26 to make connection with the rockinginember 16 on the pmper side of the axis thereof.

As here illustrated, a lever movable about two nxc's is employed, it being movable about one axis to shift the member 16 and about its other-axis to operate the 'cam 52;

62, Figs. 17 and 18, is' the lever'which is" preferably monnted'upon vthe steering Wheel post 63, said lever is pivoted to e support 64 Journalcd inon lflprightbeering 65 formed in a- 'bracket 66 mounted on the steering wheel post (i3, the support 64 being keyed et [57, to'nrock shaft 68 extending lengthwise of the steering wheel post, the key 67 extending intoa, long key-Way 69 which permits up und down movement of said shaft 68.

The' lever 62 is provided with a handle 7 0 midis pivoted at `71 tothe supportv 64: and movable about itsexis 7 1 in a direction at a vright angle to the nxisof the shaft 68 and said ylever is also provided with o, toothed segn1ent`72 which meshes with e rack 73 in the rod 68. A'snitnble sector 74 is supported by the bracket 66 and formed with an are shaped slot 75 concentric with the xls ofthe shaft'(i8 :1nd laterelslots l76, 77, 78, 79 1nd 79, 4 'i lhe 'rocking movement of the rod' 68 effected by thelever' 62, is transmitted tothe vmember 16 to shift the same axinllyfan'd the lengthwise movement ofthe rod 68, effectedby the movement' of the levernbont its axis 71, is transmitted to the disk 52a11d to the motion reversing member 26.

The rocking movement ofthe rod 68 -is transmitted to' the member 16 by vmeans of the rock erm 80, Figs. 19 and 20, located at l the lower end of the rod 68 and conneted 'thereto by e sliding connection which permits the rod to slide inj` the hub of the arm 80, nndsaid" arm is co'nnected'to one end of a link'Sl', the other end of Whichis con-` nected to one erm of the bellcrank lever'82, Fig; Lpivoted at 83 betweenr its ends to a bearing on thecasing 12. and `having' its other arm connectedv at 84 to a rod- 85 slidable in a hearingiin the casing 12 and connected by a fork 86"to the member v16. i j

The vertical movement of the'rod 68 is transmitted to thecnm-v52 by means ,of-e bell crank lever 87, lFig. 19, pivoted et 88 to the support `89 'of the arm 80, 'one arm of the bell .crank lever being connected et 99 tothe 4 lower end of-therodv` 68end'the .other erin thereof being connectedto on'eend, of a .elink 91, the other end. ofA which ispivoted to a rock arm 92,.Figs. V1 and 20, mounted on one the hollow shnft 18 and on the o'pposite endx of which rock' shaft is'mounted a rock arm 94 which is connectedby a link 95 to the 'cam disk 52,1i`ig. 2, the link being pivted tothe oem at 96. The rock shaft 93 is'provided with n cam 97 Figs. 2 and 12 thereon which works in a` slot 98 in thereversing member. 26 to raise or lower the same in accordance with the direction of-rotationofthe-shahrl.

The" cap 12,", Figs. 2, lend 4*,f'zljolds the sleeve 18 and rod 85 in their lojeau'ihfgsgV this cap resting nthevsurface 99, Figfl. 4The vcam 97, F1g.`jv12, isconnected to the'sheft 93 by'eldstmotion consistirgof a pin93f on theshaft und u slQl5f97? .inxthe :a.1`1` 1.=y yl'lhis lost motion d ela. `sthejshifting'of they mehr. ber 26 until alger' the Vshaft 93 hais;y been rocked-suiliciently`yto operate thefpins 50 and'ltoiletthe Kitch section 43 move into operativer," osiiiomend-the'cam 24; andgmem'- completed ,"'sh'i ng of the reve'rsingfmember.

neiitral positif( -l r` ingmovement and upon movement nfl-the lever 62 eboutjitsverticel `exis', tliatds,

the axis of tlle'sheft 6,8the vshaft`68 is espe'ct to its rock# v rocked by the lever 62v untilthe lever 62 is' opposite'ono of'the slots76, 77,278 'and 79,01- the'reveme'slot'79." This moveinentof4 the lever along" the s101175 canses the ,memQ ber 16 to be shlftedaxially, inovi'ngth'e'pin' 16a through the croi `over slot 16. into `aline'- ment -with one. of the slots 16", to select the y gear intended to' be shifted'. l, .Upon movement of the lever about its axis into one of the slots- 7, 77, 78, 79, 79 Ythe rod 68 is move@ upwnrdly `or downwirdly =in ac..

said lever, thus ca'u'singtlie' sha'ft V"93 tobe ber 26 and the cam 52., For instance, if the f cordnnce'withfohe direction of movement of lever 63 is moved Vinto theslot 76 or the slot 78, the rod '68 will. be moved upwardly, end" if said lever is moved Ainto-theslot 77 ,or 79,.`

the rod 68 will "Je moved downwardly: This difference in motion oi the rod68 rocks the shaft 93 invoppositedirections causing the cam 97 to raise or lower the member 26.:l For instance, if the lever is 'moved into theslot 76 or 78 so that therod 68 is raised, theshaft 93 will be 2 7 with the pin 29-of the ajrm 31, a,nd ifjthe lever- 63" isopereted laterally into the slot 77 or 79, 4the rod 68 is moved downwardly rocked tothe left, Fig, 2 so that'- the reversing member-willl eligage;` its slot v mg tliegiink 91 rearwardly, and 'rocking the arm 92 rearwardly. from eem.. 9.7;12."

mally engaged with the cams at the centers thereof. In Fig. 2, this cam and the 'rock -shaft 93 and parts operated th'eijeby are shown as havingbeen operated to move the reversing member 26 intoe ement' with the upper arm 31 and to w'it wfone pin out o the cam portion of theslot and move the 'other pin into the blank rtion thereof, the position of the parts bemgjust before alxliytmotion has been transmitted to the cam s a As indicated in'Fig. 16, the lever 62 oc- -cupies the slots 76, 77, 78, 79 and 79 'when the earin is s t to produce first second, thira'nd ourth orward` eds and reverse, respectively. Assuming at the lever 62 oocu ies the first speed slot 76, and it is desire to shift the gearing into second speed, theycem 24 has made a half revolution from its starting position as theshifting member 16 is sition occupied when a gear elementisishi d.

vMovement of the lever 62 upwardly out of the slot 76 shifts the rod 68 downwardly moving the bell crank lever 87, Fig. 19, pushrocking th sh ft its lierwnlii pFosition, e a 93'to t 'rig t,4 ig. 2 and operating the cam 52 to operate the )iii 51 tezreles'the clutch seccion 43. of the shaft 93 also rocks the motion tween shaft 93 and the cam l97,;Fg. 12, the member 26 does not change its engagement with the shifting member, but

with its slot 2 7 engagedw he pin 29 of the upper arm 81 w 'h is conneetedto the member 16 to roc said member, the cam 97 'remaining in ge ment withthe `member 26 during the movement of' .the lever 62 outof the slot376 to the cross-over slot 75. Hence, the selecting* Vmember26 remains engaged with `the same arm 31 that 'twas engaged .with when the lever 62 wasin the slot 76. v.

v The .half revolution of the clutch section 43 and cam 24 rocks'the member 16 to shift the gear .to neutral position. Continued l movement v'of the lever'62- into the slot 77,

moves the shaft 68 farther downwardly,'adA

ditionally rockin the shaft 93 shiftingthe ram 9 7 to shift t eselecting member 26 to engage its notch 27 with the pin 8.0 of the lower rock arm 32, this movement fain o erating the-cam 52. 'Owing-to the well-4 its first half the slot o f the cam 4e ofthe clutch 435110 halt is necessary to permit the clutch tocomplete revolution. It is, however, necessary that the lever 62 be actuated slow enough to give the gear shifting mechanism time to act, and an attempt to actuate the lever 62 too fast will be prevented by the fact that the pin willengage the end of the erm 32 as previously explained,

During 6 to 77 or om, slot 78 to 79, or vlce versa, no axial or selecting movement of the member 16 takes place and the pin 1 6* passes Afrom one slot 16" slot .16b on the opposite side of the crossover' 16. 7'

Assuming a shift is to be made from sec'- ond to third speed, the lever 62 is moved downwardly about its axis 71, Fig. 17, out of the slot 77 movin the rod 68 upwardly, thereby pulling the link 91 forwardly rock-` ing the shaft 93 to the left Fig. 2,'ac'tuatn the cam disk 52 to release the clutch 4 which together with the cam 24 makes a half revolution'from its half-way point to its starting position, thus setting the member 16 and the ear in neutral position, Movement ofthe ever 62 about the axis of the shaft 68 forwardly toward the slot 78 rockt the shaft 68 thereby rocking the arm 80 fbrwardly or to the i ht Fi 1 8- and 19, pulling the link 81 orwar ly to the |right, Figs. 1 and 18 moving the bell crank .level 82, Fig. 1, and shifting the`sliding rod and member 16 4axially to Vthe right of thegearlng, or downwardly in Fig. 1. Rocking mov ment of the member -.16 by the gear ftfng mechanism moves the pin 16 to the cross-over slot 16 and the axial shiftin thei-Lof by the hand lever moves the pin 16g alon the cross-over slot 16e into alinemet with another slot 16?.

The lever 62 is shifted along the slot 75 until said-lever is opposite the slot.78 thus effecting `the selectin movement va s"de, scribed and said lever 1s then 'moved downwardly about its axis 71-into the slot 78,

movingv the rod 68 upwadly' roc 'ng the bell crank lever S7, Fig.f19, pulling e link 91 forwardly, vrocki lthe shaft 9j'to the left, Fig. 2, movin te cam 97 to .the left, the reversing -mem' r 261111V wardly to engage the slot 27 thereof wit thepin 29 of the rock arm 31, which rock arm rocks the shifting member 16. l'I'hissmovement ofthe rock shaft 93 is transmitted to the cam 'disk '52 tb operate the clutch mit the clutch section an half revolution from startingV position to half-way position, thus shifting the r.

-These slots 16" prevent movement o the the shifting of the lever 62 frominto an alined lever from the slot 75 into'tlie ,slot 78 until the pin 16* 'has reached the cross-over slot 16. f i

. and engines.

gage the disk clutch before and after each goal.i shifting oper-ation, as previously described. V

My automatic shifting means is particularly advantageous'in that it is particularly simple in construction, is applied to a transmission gear casing, and can be readily applied to standard transmission gears What I claim is:-

1. In a selectiie change Speed transmission gearing, gear shifter-s, a member coacting with the Shifters and having a selectingl and shifting movement, power driven means for 'effecting the shifting `movement, and manual means for effecting the selecting movement and controlling the shifting movement bythe power driven means, substantially as and for the purpose described.

2. In a change speed transmission gearing, the combination of a memberhaving a selective and shifting movement, a powershaft, normally idle power transmitting'l mechanism between the shaft and said niembei and including coimectingir means-shift. able into and out of effective connection with said shaft and being normallyT out of effective connection therewith, and. manual means for effecting the selecting movement of said member and controlling the shifting of the connecting means into effective position, substantially as and for the purpose set thereof, saidmechanism including connecting means shi'ftable `into and out of effective connection with the shaft and heilig normally out vof effective connection therewith, and manual means forelfecting the. selecting movements of .said shifting member and controlling the shifting movementI of the connecting means into effective connection with the shaft to effect the shifting movement of said member, substantially as and for the purpose described.

4.-..In a change `speed transmission gearing,a member having a selecting and shifting movement, a power driven shaft, normally `idle power transmission mechanism between the shaft and said member' including a clutch.V element shiftable into and out' specified.

ot connection with'said shaft and being normally out of connection thereiY and linanual means for effecting the selecting movement v'of said member, and controlling the movement of the clutch element into and axially movable selecting and shifting member, a pow 2r shaft, iiorniallyfidlc power transmitting mechanism between the shaft and said member to effect the shifting movenient thereof, Asaid .mechanism including a clutch element shiftable .into and out ol connection With the shaft and boingf normally out of connection. therewith, and manual means for effecting the selecting movement of said member and controlling the movement of the clutch element into operative connection with the power shaft to control the shifting movement of said member, substantially as and for the purpose set' forth.

6. In a charge speed transmission gniing, a rocking axially movable selecting and shifting member, a power shaft, power transmitting nechanism lictu'een the shaft and said member to, effect the rocking movA nient thereof, said mechanism,including clutch clement shiftablc into and out of eonnection'with (he shaft and beingr normally out of civnnection therewith, and manual means for effecting the axial movenient of said nenlber and controlling,r the movement of the clutch element into operative position, substantially iis and for the purpose described.

7. In achange speed tramsniission gearing, a,y rocking axiilly movable selecting and shifting member. a power shaft, power transmitting ncchahism between the shaft and said. memb fr to veffect the roclriligmovement thereof, said mechanism including a clutch element iliiftable into and out of conneet-ion with the shaft and being normally out of connection therewith, and manual means for'e'cctingithc axial. movement of said i'ncnibcr and controlling the movement of the clutch el ement into operative position including a rcck shaft.V and said shifting member comprising ay sleeve arranged concentric with and slidable axially of, and movable about said rock shaft, substantially as and for the purpose specified.

`f5. A gear shifting means comprising e, shifting member, a power driven shaft, power transmitting mechanism between the shifting member andthe shaft comprisingr clutch means sl iiftable into and out of effective connectie!` with the shaft ,and being" with, and means-for/shiftmg thehliitch means into eiiectivejconnection with fthe shaft, substantially as and for the purpose 9. A gear shifting means comprising a shifting membenya power driven shaft,

power transmitting mechanism between the shifting menubar andiibhe shaft comprising 'a member mo'if'able in opposite directions,

`clutch means"V 'shiftable into and out .p of

effective connection AWit the normally out of4 effect v "ian with, means forr reversing the movement transmitted tg. the shiftable'me'mber by vthe clutch means, and means forshifting the clutch means into -e'ective connection with the shaft substantially as and for the purpose set forth.

10. In a. change speed transmission gearing, a shifting member movable in opposite directions, a power shaft, normally idle power transmitting mechanism between the shaft and said member for effecting the shifting thereof, said mechanism including motion reversing mea-ns shiftable .to transmit motion in opposite directions to said member, and manual means for effecting the shifting of the reversing means and controlling the actuation of said mechanism by the shaft, substantialh,4 as and for the purpose set forth.

11. In a. change speed transmission gearing, a rocking shifting member movable in opposite directions, n power shaft, and nor- I nally idle transmitting mechanism between the shaft and said member to rock the same, said mechanism including a. motion reversing member rshiftable into connection with the rocking member on either side of the ,exis thereof, substantially a's and for the' purpose described.

12. In a change speed transmission gearing, a rocking shifting member movable in opposite directions, a power shaft, normally idle transmit-ting mechanism between the shaft and said member to rock the same, said mechanism including a motion revers` ing member shiftable into connection with the rocking member on opposite sides of the axis thereof and. manual means for controlling the shifting of said reversing mem'- ber and the actuation of said mechanism by the power shaft, substantially as and for the. purpose specified.

13. In a change speed'transmission gearing, a rocking shifting hembermovable in opposite directions., a po' 'er shaft,-normally idle power transmitting mechanism between the shaft and said member to rock the same, said mechanism including a motion reversing member shiftable into and out of. connection with the rocking member on opposite sides of the axis thereof, and means for connecting and disconnecting said ,mechanism and the owen` shaft, and manual means for eiectlng the shifting of the reversing member and the opera-tion of the former means, substantially as and for the purpose set forth 14. In a change speed vtransmission gearing, a. rocking shifting member movable in opposite directions, a power shaft, normally idle ower ltransmitting mechanism between the s aft and said member to rock the same, said mechanism including a motion reversing member shiftable into 'and out of connection with the rocking member on opposite sides of the axis thereof, and means for connecting and disconnectin saidmechanism and the power shaft, an manual means for eiectin4 the shifting of .the reversing member an the operatlon of the former means, the manual means including a rocking part havingea cam coactng with said v reversing mem r to shift the same, substantially as and for the purpose described. 15. In av ,change speed transmiion gearing, a rockin Amember movable'about its axis in opposite directions from ifs neutral position to effect different gear shifts, a power shaft, normally idle p'ower transmitting mechanism between the 'shaft and said member including a motion reversing member shiftable into and out of engagement with the former member on opposite sidesof the axis, and connectingmeans shiftable into and out of effective connection ,with said shaft, and manual means including a rocking part coasting with thermotion reversing member to shift the same and connections operating to shift the shiftable connecting means, substantially as and for the purpose set forth.

16. In a change speed eating, the combination of a rocking mem r, a power shaft, normally idle power transmittin mechanism between the shaft and sai member including shiftable connecti means shiftable into and out ofeffective connection `with the shaft, and manualmeans for controlling the shifting of the rocking member and the movement of the connecting means into and out of effective connectionwith the power shaft, substantially as and for the purpose described.

1 In a change speed. caring, the combination of a rocking mm "r, a power shaft, 1015 .shifting of the connectin means into and out'ofA effective connections-With the power shaft, said manual means 3 cluding a rock shafthaving a cam the coactlng'with the reversing member, substantially as and for the purposespecied.' l

18. I n a. change spteed transmission gearing, a rocking shi ing Ineiher movable about its axis 1n opposite directions from its neutral position to eect different gear shifts, a power shaft, normally idle power' v transmitting mechanism between the shaft and', said member includin ook arms pro. jecting 1n opposite directxgcl'r'elatively to the axis of the shifting mel'nbejanda m0 tion reversing member shiftablef? out of engagement with either ofthe rock arms, said mechanism also including a clutch means shiftable into and out. of conl130.

Vshifting member, a power sha t,

, sliftableinto nection. with said shaft, and manual `means including a rocking part having a cani coactng with the motion reversing member vto shift the same, and said nected to theclutch thereof into an o rative position, substantially as and for t e pur pose specified.'

19. In a change speed gearin i, a rocking normally idle ower transmitting mechanism between the s iaft and said member including a shiftable connecting means f normally out of effective connection with `the Shaft and Shift able into and out of connection with the Shaft, and a motion reversing member shiftable into and Aout of connection with the `rocking member, and manual means for effectingthe shifting of the reversing member and controlling the movement of the shiftable connecting means into operative position. comprising a .rock shaft for operat- Ving the clutch. element, and an operating lever connected to the shifting member to move the same axially on the rock shaft, substantially as and for the purpose .set forth.

20. Ina change. speed gearin a rocking shifting meinber,. a power sha t; normally idle power transmitting mechanism between the shaft and said member including a shiftable connecting means normally7 out of effective connection withV the power 'shaft and shiftable into and out of connection with the shaft, aiid a motion reversing member shiftable into and out of connection with the rocking member, manual means for effecting the shifting of the reversing member and controlling .the 'movement of the shiftable connecting means into effective connection con'il'irising a rock shaft having a camfthelreon coacting with the reversing 'member, sulistantially as and for the purpose specified.

21. In a change speed gearing, a rocking shifting member, a power shaft, normally idle power trai'ismitting mechanism between tlies'liaft and saidincmber includinga clutch `element shiftable into and out of connec-r tion with the shaft1 and a reversing member and out of connection with the `rocking member, and manual means for effecting the shifting of the reversing member and controlling the movement of the clutch clementl into ol'ieratire position, the manual means comprising a rock shaft, and the sli Fting member comprising a sleeve mounted concentric with the rock shaft and Amovable'abouty the same, substantially as and for the piilrpose specified.

22. In arhange speed gearing,

shifting member, a power shaft, normally idle power transmitting mechanism between `the shaft and said member including aA clutch element shiftable into and out of connection with the shaft, and a reversing meinasy part being"a'lscr'conu a rocking ber shiftable into and `1t `of connection with the Hacking member on, opposite sides of its axis, manual means for affecting the shifting reversing member, subs ,antially as andv for the purpose set forth.

y 23. In awcliange speed transmission gear-- ing, a member having a selectii'ig and. shift-- ing movement and being normally arranged in a neutral position with respect to its shifting movement and being movable in 0ppm site directions from its neutral position to effect different gear'shifts a power shaft,

normally idle power tansmitting mechanism between the shaft and said member for effecting the shifting movement tl'iereohsaid mechanism including motion reversing means shiftable to transmit motion in opposite directions, and mani al means 'for effect :ing the selective movemontof said'mcmber and*v effecting the shiftiig of. the reversing means and controlling tl ie actuation `of said mechanism by the shaft, :substantially as and for the purpose described.

24. In a changespeed transmission gearing, a rocking axially movable selecting and shiftingmember normally arranged in neu;- tral position with resp ect to its rocking movement and movable in opposite. direc.- tions from its neutral position to effect differentshifts, a power shaft, and normally idle powe'i` transmitting mechanism between the shaft and said membe r to rlock` the same, said vmachanismI includin g a motion reversing member shiftable imo and vout of connection with the rocking member on oppo-` site sides of the axis Athfrcof5 substantially as and for the purpose specified.

25. In a change speed transmiing, a rocking axially movable sele shifting member, a power shaft, normally idle power transmitting mechanism between the shaft `and said membe L' to'rock the same, said mechanism including; a motion vreversing member sliiftable into coi'inectioii 'with tlie rocking meinber on o; posite sides of the axis thereof, manual .meal s for effecting the axial movement of said member' and coritrolling the shifting of said motion reversing member andthe actuation of said mechanism by the power shaft, substzfntially as and for the .purpose set forth.

26. In a change speed ransmission gearing, a rocking axially mo\` able selecting `and shifting member, a power shaft, normally idle power transmitting mechanism between said mechanism `includinga motionreversing member shiftable into .connection with ist` the rocking member, and means for connecting and disconnecting the power .trans-A mitting mechanism and the power shaft, and inanuatmeans-for effecting the axial movement'of the selecting and shifting member, the shifting of th'ereversing member and the operation of said means to connect the ower shaft and the power transmitting mec anism, substantially as and for the purpose described. i,

27. In a change speed transmission gearing, a rocking axially movable selecting and shifting member, a power shaft, normally idle power transmission mechanism between the shaft and said member including a motion reversing member shiftable into and out of engagement with said member on opposite sides of its axis, said mechanism also including connecting means shiftable into and out of connection with the power shaft,

manual means including a rocking part co acting with the motion reversing member to shift the same, and connections coactmg with the said connecting means for controlling the movement thereof' into and out of effective connection with the said power shaft, substantially as and for the purpose .set forth.

28. In a change speed transmission gearing, a rocking axially movable selectingand shifting member, a power shaft, normally idle power transmitting mechanism between the shaft and said member including oppositely extending rock arms connected to said member, and a motion reversing member shiftableinto and out of engagement with either of the arms, said m'echaiiisrii also including a clutch element shiftable into and out of connection with said shaft, manual means for effecting the axial shifting of said member including a rocking part having a cam coacting with the motion reversing member -to shift the same, said manual means also controlling the movement of the clutch element into operative position, substantially as and for the purpose specified.

2S). In a change speed gearing, a rocking axially movable selecting and shifting member,a power shaft, normally idle power fransmitting mechanism between the shaft and said inemberfor effecting the rocking movement thereof, said mechanism including a clutch elcinentshiftable into and out of connection with said shaft and a motion reversing member shiftable into and out of connection with the rocking member, manual means for effecting the selecting movement of the sliifting member and effecting the yshifting of the reversing member and controlling the movement of the clutch element into operative position, the manual means comprising a rock shaft, and the rocking member comprising a sleeve mounted concentric with the rock shaft and slidable axially thereof, substantially as and for the purpose set forth.

30. In a change speed transmission gearing, a shiftin member normallyj'arranged in neutral position and movable opposite directions from its neutral position to effect different gear shifts, a power shaft,nrmally idle power transmitting mechanism between th shaft and said member for effecting the shifting thereof, said mechanism includingl motion reversing means shiftable to transmit motion in opposite directions to said member, and manual means for effecting the shifting "of the reversing means and controlling-the actuation of saldmechanism by the shaft, the manual means includinga part operable to delay the shifting of the reversing means until the actuation of said mechanism to shift the gears into neutral position, substantially as and for the purpose described. p

31. In a change speed transmission gearing, a rocking member, a power shaft, normally idle power transmitting mechanism between the shaft and said member to rock the same including a motion reversing member shiftable into and out of rconnection with the rocking member on opposite sides of its axis,y and means for effectively connecting ,and disconnecting said mechanism and the ,mally idle Vpower transmitting mechanism between the shaft and said member to rock the same including a motion reversing membei shiftable into and out of connection with fthe rocking member on opposite sides of its axis,`and means connecting and disconnecting said mechanism and the power shaft,

and manual means for effecting the shifting of the reversing member and the operation of the former means, the manual means including a rocking part having a cam coacting with the reversing member to shift the saine, the cam being'connectcd to the rocking part by a lost mot-ion connection, substantially as and for the purpose specified.

33. In a change speed transmission gear- 12o ing, a. rocking shifting member, a power shaft, normally idle power transmitting mechanism between the shaft and said memberincluding rock arms projecting in o posite directions relatively to the axis o the shifting member and being connected to said member to rock the same, a motion reversing member shiftable into and out of engagement witheither of the rock' arms, said mechanisni also including a clutch shiftable into and ont of engagement'. with said shaft, and

manua means including a rocking part having a cam coacting witfi the reversing member to shift the' same,`and connected to the b clutch to control the movement thereof' into operative osition, the cam being colmected to the `roc 'ng part yby a lost motion oonnection, substantially as and for the'pnrpose set forth.

:m` 34,1 Ina change sieed transniission gearling, `a rockin shi ting member, a power shaft, normal y idle power "transn tting mechanism between the shaft and s id mem ber including rock arms projecting;r in opposite directions andconnected, to said mem )er f to rock the same, a motionv .reversing member shiftable into and out of engagementfwith eitherofthe rock arms, the rock arms being formed 'with pins and the reversing men'lber zo formed `with open-ended slots for receiving the'pins respectively, mechanism also 'including a clutch shifts-ble into and out of connection with said shaft, and manual means including a rocking part having a cam enacting with the n'iotiol'i reversing; member and connected to the clutch element, the cam being connected to the rocking part by a lost motion connection, substantially as and for the `purpose d yribect 3o 35. 1n a change speed transmission gearing, a rocking shifting member, a power shaft, normally idle power transmitting mechanism between the shaft and said member including a clutch element shiftable into and out of connection with the shaft and the reversing member shiftable :intoand out connection with the rocking' member on op-l osite sides of its axis, marinai means foref- 1 Ifbcting the shifting of the reversing mem- `40 ber and controlling the movemifrnt of the clutch into operative position, the manual means coxnlndelrnr a rock shaft and the roc ing member mprising a sleeve mounted concentric with the roch shaft and movable about the same, the rock shaft having a cam coat-ting With the reversing n'iel'nber and the cam being connected to the rock shaft by a lost motion (.ronnectimi, snbstantially as and Y for the purpose specified. 36. In a change speed gearing, rocking shifting 4meml haft, normally idle power trans ttingg mechan m between the shaft and inclndir a elo yh element shiftablc into and. ont of conne( ion with the shaft, and a reversing; member shiftable into and out of connection witll the rocking;r membcr on opposite sides of its axis, manual means for infecting; 4the sl'iiiting of the reversing member and controlling the movement of the cllltch elel'l'lent into operative position comprising a roclr shaft having a cam thcrcoi'i coactil'lfn with mcn'lber, the cam being; con by a lost motion conne 'tionl sull.' 65 and for the purpose forth,

37. In a change speed gearing, af--rocking, axially movable selecting and shifting member, a power sh aft, normally idle power transmitting mec'ianism between the shaft.l` e and said membei for effecting the rocking 7e n'iovement there )f,: said mechanism including a clutchv shiftable into and out of connection with said shaft, and emotion reversing member shiftable into and out of connection 'with tl le'rockin member, manual 75 li'ieans for effecting the se ecting movement ofthe shifting member and effecting the shifting of the r1 :versing member and con-` trolling the movement of said clutch into operativeposition, the manual means comso prising a rock sha ft andthe rocking member comprising a sleevemounted concentric with therock shaft and slidable axially thereof, the rockV shaft ha ving a cam coacting with the'reversing member to shift the same and g5 being connected to the clutch element to control the shifting o E the same, substantially as and for the purpose described.

38. The combin ition with a drivin shaft, a driven shaft, a main clutchconnectmg the driving and driven shafts, and means for operating theclutzh, of a transmission gearing inclndin shift'ers, a member coacting with the shi ters to shift the same, power transmitting mech anism between the driving shaft and said member for effecting the shifting movemext thereof including connecting means shiftable into effective connection with the d iving shaft after the main. i clutch is disengaged and out of effective connecton prior to rcngagin'g the main clutch, substantially as and for the "purpose specified. f

39. The combinationwith a drivingshaft and driven shaft, a main clutch connecting the driving and d1 iven shafts, and ,means for operating the clutch, of a transmission geartransmission 'gearing including a shifting member, power transmitting mechanism between the driven shaft and said member in- 11o clnding connectim; means normally out of effective connection wvith the driving shaft, connections betwee n said mechanismandthe` main clutch operating to shift the main clutch out of opemtive position, andipern 't 115 the same to move into operative position b fore and after tho gear shifting operntiop, and manual means for controlling lthe opeation of said'l connecting means into and out of effective position, substantially asand for the purpose described.

40. The combina tion with a driving shaft. a driven shaft, a main clutch connecting-the driving shaft and the ldriven shaft, 'anni means lfor operating the clutch, of a change speed transmission gearing ncludinga shif'ting member, power transnitting mechanism between the driving .shaft and said member ,inclndiifg an actnzttor, connections between the actuator and the main clutch operating 41. In a change speed gearing, arocking` axially movable selectingand shifting member normally arranged in a neutral position with respect'to its shifting movement and movable in opposite directions from its neutral Aposition to effect diiferent gear shifts, a power driven shaft, normally idle power transmitting mechanism between the'shaft and said member for effecting the rocking movement thereof, said mechanism including a shiftable clutch element and a motion reversing member shiftable into and out. of connection with the rocking member, manual [means for effecting the selecting move ment of the first member and eifecting the shifting of the reversing member and controllingr the movement of the clutch element into operative position, lthe manual means comprising a rock shaft, and a no n-slidable sleeve having arms extending in opposite directions therefrom and coacting with the reversing member, the rocking member including a sleeve mounted concentric with and slidable on the rock shaft and connected to the Vnon-slidable sleeve to rock therewith,

means on the lock shaft, coacting with thev reversing member to shift the saine, and means connecting the rock shaft and the shiftable element to control the shifting thereof, substantially as and for the purpose specified.

42. The combination with a driving shaft, a driven shaft, and a clutch connecting thc driving and driven shafts, and means for operating the clutch; of a transmission gearing connected to the driven shaft including Shifters, a. member coacting with the Shifters to shift the same, power transmitting mechanism between the'shaft and said member for effecting the shifting movement thereof including a clutch, and means whereby the second-mentioned clutch is moved into operative position after the main clutch is disengaged, and the main lclutch rengaged after the second clutch is disengaged, substantially as and for the purpose specified.

43. The combination with a driving shaft, a driven shaft, a main clutch connecting the driving-and driven shafts, and means for operating the clutch; of a change speed trans-v mission gearing including a shifting member,power transmitting mechanism between the driving shaft and said member including a clutch section normally out of operative position, connections between said mechanism and the main clutch operating means,

. and manual means for controlling the operation of the second-mentioned clutch, substantially as and for the purpose set forth.

44. The combination with a driving shaft, a driven shaft, a main clutch connecting the driving shaft and the driven shaft.. and means for operating the clutch; of a c anve speed transmission gearing including a shifzting member, power transmitting mechanism between the shaft and said member including a shaft, a cam mounted on the shaft, connections between the cam and the main clutch operating means, a clutch operable to connect said shaft Yto the power shaft, the clutch being mounted on the cam shaft, and manual means controlling the operation of the second-mentioned clutch, substantially as and for the purpose described. 45. The combination of a. driving shaft, a driven shaft, a main clutch between the shafts, and means for operating the main clutch; of a change speed gearing including a shifting member, power transmitting mechanism between the shaft and said member and the clutch operating means includ ing a shaft, a cam mounted on the shaft, a rock shaft connected tothe clutch operating means, a lever fixed on the rock shaft and 9g coacting with the cam, a lever loosely mounted on the rock shaft and coacting with the cam and being connected to the shifting' member, a clutch for connecting and disconnecting the cam shaft and the power shaft, manual means for controlling the shifting of the last-mentioned clutch into operative position, and cam means'for controlling the shifting of the cam out of operative position, substantially as and for the purposespecified.

'46. The combination with a driving shaft, a driven shaft, a main clutch connecting the driving and driven shafts, and means for operating the main clutch; of a. change speed transmission gearing conn I.etedito the driven shaft and including a shifting member, power transmitting mechanism between the driving shaft and said member incl-uding a clutch section normally out of op- 1go erative position, connections between said mechanism and the main clutch operating means to control the operation of the same, manual means for controlling the operation of the second-mentioned clutch, and means controlled by the gear shifting4 mechanism for delaying the operation of said connec tion to prevent the main'clutch from engaging until the gear shifting operation is completed, substantially as and for the purpose set forth.

47. The combination with a driving shaft, a driven shaft, a spring pressed main clutch connecting the driving and driven` shafts, and means for operating the main clutch; of a change speedtransmission gearing connected to the driven shaft and including a shifting member, 'a driving element, connections between the driving element and the shifting member, connections between the 

